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Home >> Ford >> 2000 >> Taurus LX, 3.0 2, AX4N >> Repair and Diagnosis >> External Pages >> Different car >> Section 1260 (Glass, Frames And Mechanisms) >> Diagnostic Tests >> Glass, Frames and Mechanisms >> Pinpoint Tests >> Pinpoint Test B: A Single Power Window is Inoperative - LH >> Pinpoint Test B: A Single Power Window Is Inoperative - LH

Pinpoint Test B: A Single Power Window Is Inoperative - LH

WARNING: This page is about a different car, the 2008 Ford RV Cutaway, 2008 Ford Econoline, 2008 Ford E450 Super Duty, and 2008 Ford Cutaway. However, it is still accessible from the selected car via links, so may be relevant.
  1. B1 CHECK CIRCUIT 170 (RD/LB) FOR VOLTAGE 
    • Disconnect: LH Front Window Regulator Control Switch C508
    • Key in ON position.
      • Fig 1: Checking Circuit 170 (RD/LB) For Voltage
      GF0011353Courtesy of FORD MOTOR CO.
    • Measure the voltage between LH front window control switch C508-11, circuit 170 (RD/LB) harness side and ground.
    • Is the voltage greater than 10 volts? 
    1. YES  : Go to  B2.
    2. NO  : REPAIR the circuit. TEST the system for normal operation.
  2. B2 CHECK CIRCUIT 57 (BK) FOR AN OPEN 
    • Key in OFF position.
      • Fig 2: Checking Circuit 57 (BK) For An Open
      GF0011354Courtesy of FORD MOTOR CO.
    • Measure the resistance between LH front window control switch connector C508-10, circuit 57 (BK) harness side and ground; and between LH front window control switch connector C508-14, circuit 57 (BK) harness side and ground.
    • Is the resistance less than 5 ohms? 
    1. YES  : Go to  B3.
    2. NO  : REPAIR the circuit. TEST the system for normal operation.
  3. B3 CHECK THE LH FRONT WINDOW CONTROL SWITCH 
    • Key in ON position.
      • Fig 3: Connecting Fused Jumper Between LH Front Window Control Switch C508-11 & C508-15, Circuit 170 (RD/LB) & 226 (WH/BK)
      GF0044464Courtesy of FORD MOTOR CO.
    • Connect a fused jumper between LH front window control switch C508-11, circuit 170 (RD/LB), harness side and LH front window control switch C508-15, circuit 226 (WH/BK), harness side; and between LH front window control switch C508-9, circuit 227 (YE), harness side and LH front window control switch C508-10, circuit 57 (BK), harness side. The window should move up.
      • Fig 4: Connecting Fused Jumper Between LH Front Window Control Switch C508-11 & C508-9, Circuit 170 (RD/LB) & 226 (YE)
      GF0044465Courtesy of FORD MOTOR CO.
    • Connect a fused jumper between LH front window control switch C508-11, circuit 170 (RD/LB), harness side and LH front window control switch C508-9, circuit 227 (YE), harness side; and between LH front window control switch C508-15, circuit 226 (WH/BK), harness side and LH front window control switch C508-14, circuit 57 (BK), harness side. The window should move down.
    • Did the window open and close? 
    1. YES  : INSTALL a new LH front window control switch. REFER to Window Control Switch . TEST the system for normal operation.
    2. NO  : Go to  B4.
  4. B4 CHECK CIRCUITS 226 (WH/BK) AND 227 (YE) FOR AN OPEN 
    • Disconnect: LH Window Regulator Motor C524
    • Key in OFF position.
      • Fig 5: Checking Circuits 226 (WH/BK) & 227 (YE) For An Open
      GF0044466Courtesy of FORD MOTOR CO.
    • Measure the resistance between LH front window control switch C508-9, circuit 227 (YE), harness side and LH window regulator motor C524-1, circuit 227 (YE), harness side; and between LH front window control switch C508-15, circuit 226 (WH/BK), harness side and LH window regulator motor C524-2, circuit 226 (WH/BK), harness side.
    • Is the resistance less than 5 ohms for both measurements? 
    1. YES  : INSTALL a new window regulator motor. REFER to Window Regulator Motor - Front Door . TEST the system for normal operation.
    2. NO  : REPAIR the circuit. TEST the system for normal operation.
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